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Harry, how much time do I have to fill the Melt Indexer Barrel and start the test in a Method A Test. I have heard 60 Seconds to fill and then wait 300 Seconds or 420 Seconds. What is the proper procedure?
- Date added:
- Wednesday, 22 August 2007
- Last revised:
- Thursday, 23 August 2007
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Answer
ASTM requires the operator to fill the bore, insert the piston and start the test within a minute. As soon as it is finished, the test is started on the machine and the preheat countdown begins. Generally, ASTM D1238 requires 420 seconds +/- 30 seconds for the pre-heat period but that can be overruled in the materials specification if there is one.